Liquid crystal display with projecting portions on the electrodes

Abstract

The present invention provides a liquid crystal device having excellent gradation characteristics. A liquid crystal device of the invention has a liquid crystal held between a pair of electrodes. At least one of the electrodes is provided with a plurality of stripe electrodes with different spaces therebetween, and films provided between the respective stripe electrodes and having a sheet resistance of 10 4 Ω/□ to 10 8 Ω/□. Alternatively, at least one of the electrodes has a plurality of projecting stripe portions formed thereon with different spaces within each of the pixels formed by intersections of both electrodes, the spaces between the projecting portions changes with a gradient within a pixel, and means for forming a distribution gradient of the strength of the electric field applied to the liquid crystal along the gradient of the space change. Thus, the controllability of the occurrence position of a reverse region and extension thereof is improved, and the applied voltage-transmittance characteristic with good linearity are obtained.

What is claimed is: 
     
       1. A liquid crystal device comprising a liquid crystal disposed between a pair of electrodes, wherein at least one of said electrodes has a plurality of stripe electrodes formed with continuity and different spaces therebetween within each of the pixels, and films provided at least in said spaces and having a sheet resistance of 10 4  Ω/□ to 10 8  Ω/□. 
     
     
       2. A liquid crystal device according to claim 1, wherein said spaces change with a gradient over one pixel. 
     
     
       3. A liquid crystal device according to claim 1, wherein each of said stripe electrodes comprises a projecting portion having a height of 5% to 15% of the thickness of the cell used. 
     
     
       4. A liquid crystal device comprising a liquid crystal held between a pair of electrodes, wherein at least one of said electrodes has a plurality of projecting portions formed within different spaces therebetween within each of the pixels, said spaces changing with a gradient within one pixel; and means for forming a distribution gradient of the strength of the electric field applied to said liquid crystal along the gradient of the space change. 
     
     
       5. A liquid crystal device according to claim 4, wherein said projecting stripe portions have a height of 5 to 15% of the cell thickness used. 
     
     
       6. A liquid crystal device comprising a liquid crystal held between a pair of electrodes, wherein at least one of said electrodes has first low-resistance stripe electrodes to which electricity is supplied, and a plurality of second stripe electrodes formed with different spaces therebetween within each of the pixels, and a film having a sheet resistance of 10 4  Ω/□ to 10 8  Ω/□ is provided between the first and second stripe electrodes. 
     
     
       7. A liquid crystal device according to claim 6, wherein said spaces change with a gradient over one pixel. 
     
     
       8. A liquid crystal device according to claim 6, wherein each of said stripe electrodes comprises a projecting portion at a height of 5 to 15% of the cell thickness used. 
     
     
       9. A liquid crystal device comprising a liquid crystal held between a pair of electrodes, wherein at least one of said electrodes has a plurality of projecting stripe portions formed thereon with different spaces therebetween within each of the pixels, the spaces between the respective projecting portions changing with a gradient within a pixel; and the electrode distance between said electrodes is provided with a gradient along the gradient of the space change.